/*
 * Copyright 1999-2018 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alibaba.csp.sentinel.dashboard.rule.nacos;

import com.alibaba.csp.sentinel.dashboard.datasource.entity.rule.FlowRuleEntity;
import com.alibaba.csp.sentinel.datasource.Converter;
import com.alibaba.fastjson.JSON;
import com.alibaba.nacos.api.config.ConfigFactory;
import com.alibaba.nacos.api.config.ConfigService;
import java.util.List;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * @author Eric Zhao
 * @since 1.4.0
 */
@ConditionalOnProperty(value = "sentinel.nacos.enabled", havingValue = "true")
@Configuration
@EnableConfigurationProperties(NacosConfigProperties.class)
public class NacosConfig {

  @Bean
  public Converter<List<FlowRuleEntity>, String> flowRuleEntityEncoder() {

    return JSON::toJSONString;
  }

  @Bean
  public Converter<String, List<FlowRuleEntity>> flowRuleEntityDecoder() {

    return s -> JSON.parseArray(s, FlowRuleEntity.class);
  }

  @Bean
  public ConfigService nacosConfigService(NacosConfigProperties nacosConfigProperties)
      throws Exception {

    return ConfigFactory.createConfigService(
        nacosConfigProperties.assembleConfigServiceProperties());
  }

}
